Monitor riser



FIG. 1 illustrates a front perspective view of a monitor riser;

FIG. 2 illustrates a front elevation view thereof;

FIG. 3 illustrates a back elevation view thereof;

FIG. 4 illustrates a side elevation view thereof;

FIG. 5 illustrates a side elevation view thereof;

FIG. 6 illustrates a top plan view thereof;

FIG. 7 illustrates a bottom plan view thereof;

FIG. 8 illustrates a bottom perspective view; and,

FIG. 9 illustrates a cross-section view along line 9-9 depicted in FIG. 6. 

CLAIM The ornamental design for a monitor riser, as shown and described. 